NTSB Identification: FTW84LA283.
The docket is stored on NTSB microfiche number 24992.
Accident occurred Thursday, June 21, 1984 in OKLAHOMA CITY, OK
Aircraft: HUGHES 369HS, registration: N9124F
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

WHILE PERFORMING A PRACTICE AUTOROTATION PLT FAILED TO BRING IN POWER IN TIME TO ARREST THE HIGH RATE OF DESCENT. THE HELICOPTER TOUCHED DOWN HARD AND THE MAIN ROTOR BLADES FLEXED DOWNWARD STRIKING THE TAIL BOOM AND SEVERING IT. THE PLT STATED HIS FAILURE TO ADD POWER WAS DUE TO HIS BEING FATIGUED. THE PILOT HAD FLOWN EIGHT HOURS THE DAY OF THE ACCIDENT AND STATED IT WAS EXTREMELY HOT THAT DAY.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IN-FLIGHT PLANNING/DECISION..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DESCENT..EXCESSIVE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LEVEL OFF..DELAYED..PILOT IN COMMAND



Contributing Factors

FATIGUE..PILOT IN COMMAND

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